Home / 17,121.05-25,665.57-8,782.61

Finding the Fourth Proportional to 17,121.05, 25,665.57 and 8,782.61

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Solution

The fourth proportional to 17,121.05, 25,665.57 and 8,782.61 is: 13,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,121.05 : 25,665.57 = 8,782.61 : x
  2. Step 2: Convert to fraction form
    17,121.05/25,665.57 = 8,782.61/x
  3. Step 3: Cross multiply
    17,121.05x = 25,665.57 × 8,782.61
  4. Step 4: Simplify right side
    17,121.05x = 225,410,563.41
  5. Step 5: Solve for x
    x = 225,410,563.41/17,121.05
  6. Step 6: Final answer
    x = 13,165.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.